| __which_first_found() | List of executables to choose within `PATH` | This function is used by "guessing" mechainsm. Will return full path to first matched binary name provided in argument list. At the moment used only in `__export_*()` functions. |
| __export_pager() | Empty or pager name | `export PAGER`<br>If user hadn't explicitly specify pager name, then function will try to "guess" first available pager available using `__which_first_found()`.<br>Default list: **less**, **most**, **more**, **cat** |
| __export_editor() | Empty or editor name | `export EDITOR`<br> If user hadn't explicitly specify editor name, then function will try to "guess" first available editor available using `__which_first_found()`.<br>Default list: **vim**, **emacs**, **nano**, **ee**, **vi** |
| __export_browser() | Empty or browser name | `export BROWSER`<br>If user hadn't explicitly specify browser name, then function will try to "guess" first available editor available using `__which_first_found()`.<br>Default list: **firefox**, **midori**, **lynx** |